JPH01173809U - - Google Patents
Info
- Publication number
- JPH01173809U JPH01173809U JP6156688U JP6156688U JPH01173809U JP H01173809 U JPH01173809 U JP H01173809U JP 6156688 U JP6156688 U JP 6156688U JP 6156688 U JP6156688 U JP 6156688U JP H01173809 U JPH01173809 U JP H01173809U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply circuit
- input
- operates
- output terminals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Electrical Variables (AREA)
- Control Of Voltage And Current In General (AREA)
Description
第１図はこの考案の一実施例による電源回路の
回路図、第２図はその動作を説明するタイムチヤ
ートである。
１……バツテリ、２……イグニツシヨンスイツ
チ、４……三端子レギユレータ、７……バツクア
ツプ回路。
FIG. 1 is a circuit diagram of a power supply circuit according to an embodiment of this invention, and FIG. 2 is a time chart illustrating its operation. 1... Battery, 2... Ignition switch, 4... Three terminal regulator, 7... Backup circuit.
Claims (1)
出力端子間に、該入力端子に所定電圧以上の電圧
が印加されたときに作動するバツクアツプ回路７
を設けたことを特徴とする電源回路。 In the power supply circuit, a backup circuit 7 operates between the input and output terminals of the three-terminal regulator 4 when a voltage higher than a predetermined voltage is applied to the input terminal.
A power supply circuit characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6156688U JPH01173809U (en) | 1988-05-12 | 1988-05-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6156688U JPH01173809U (en) | 1988-05-12 | 1988-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01173809U true JPH01173809U (en) | 1989-12-11 |
Family
ID=31287225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6156688U Pending JPH01173809U (en) | 1988-05-12 | 1988-05-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01173809U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239943U (en) * | 1988-09-09 | 1990-03-19 | ||
| JP2007020388A (en) * | 2005-06-08 | 2007-01-25 | Tamura Seisakusho Co Ltd | Voltage conversion circuit and switching power supply |
| US7928601B2 (en) | 2004-12-28 | 2011-04-19 | Fujitsu Semiconductor Limited | Power supply circuit for providing semiconductor integrated circuit device with a plurality of power supply voltages |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6011912A (en) * | 1983-06-15 | 1985-01-22 | エス・ジ−・エス−アテス・コンポネンチ・エレツトロニシ・ソシエタ・ペル・アチオニ | Voltage regulator |
| JPS6218971A (en) * | 1985-07-17 | 1987-01-27 | Origin Electric Co Ltd | Pulse power source |
-
1988
- 1988-05-12 JP JP6156688U patent/JPH01173809U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6011912A (en) * | 1983-06-15 | 1985-01-22 | エス・ジ−・エス−アテス・コンポネンチ・エレツトロニシ・ソシエタ・ペル・アチオニ | Voltage regulator |
| JPS6218971A (en) * | 1985-07-17 | 1987-01-27 | Origin Electric Co Ltd | Pulse power source |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0239943U (en) * | 1988-09-09 | 1990-03-19 | ||
| US7928601B2 (en) | 2004-12-28 | 2011-04-19 | Fujitsu Semiconductor Limited | Power supply circuit for providing semiconductor integrated circuit device with a plurality of power supply voltages |
| JP2007020388A (en) * | 2005-06-08 | 2007-01-25 | Tamura Seisakusho Co Ltd | Voltage conversion circuit and switching power supply |